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Decentralized droop control in DC microgrids based on a frequency injection approach

Peyghami, S ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1109/TSG.2019.2911213
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2019
  4. Abstract:
  5. Power sharing control among grid forming dc sources employing a conventional voltage droop approach meets inaccurate load sharing and unacceptable voltage regulation performance. Thereby, communication-based secondary and supervisory controllers have been presented to overcome the aforementioned issues. Furthermore, with the aim of eliminating communication system, frequency-based droop approaches have been introduced for low-voltage dc grids where the frequency of the superimposed ac signal onto the dc voltage is proportional to the output power. However, in reality, dc grid structures can be applied to medium and high voltage applications with different X/R ratios. This paper generalizes the frequency-based droop scheme for dc microgrids with different low, medium, and high X/R ratios. Obtained simulation and experiment results demonstrate the effectiveness of the proposed control method. © 2010-2012 IEEE
  6. Keywords:
  7. Grid forming ; Electric power transmission networks ; HVDC power transmission ; Voltage regulators ; Control methods ; DC grid ; Droop control ; Frequency droop ; High voltage applications ; Power sharing ; Supervisory controllers ; Voltage droop ; Electric power system control
  8. Source: IEEE Transactions on Smart Grid ; Volume 10, Issue 6 , 2019 , Pages 6782-6791 ; 19493053 (ISSN)
  9. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85076755326&doi=10.1109%2fTSG.2019.2911213&partnerID=40&md5=c9dea802aebbad62e7e5e6fe14d5f40c